| 张德明,骆珊,彭成龙,安亚运,秦兴志.贵州省毕节市耕地土壤元素含量特征与质量评价[J].贵州地质,2021,38(4):472-479 |
| 贵州省毕节市耕地土壤元素含量特征与质量评价 |
| Elements Content Characteristics and Quality Evaluation of Cultivated Land Soil in Bijie City, Guizhou Province |
| 投稿时间：2020-12-09 |
| DOI： |
| 中文关键词: 耕地 元素含量 土壤质量 评价与分析 毕节市 贵州省 |
| 英文关键词:Cultivated land Soil Elements content Soil quality Evaluation and analysis Bijie city Guizhou Province |
| 基金项目:贵州省自然资源厅项目“贵州省毕节市耕地质量地球化学调查评价报告汇总编制”(黔地矿耕调2017-34)，贵州省地矿局科研项目(黔地矿科合[2020]27号)。 |
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| 中文摘要: |
| 为详细了解毕节市耕地土壤的元素含量特征及质量状况，本文通过1∶50000耕地质量地球化学调查，获得了全市耕地土壤中元素的高精度分析数据。统计结果表明毕节市耕地土壤中硒、镉、铜、锰、钴、钒处于较高含量水平；元素的高含量及分布与成土母质、土壤酸碱度、土壤类型及土地利用方式的影响关系密切，其中成土母质为主要影响因素。选取养分指标氮、磷、钾及环境指标酸碱度、砷、镉、铬、铜、汞、镍、铅、锌等对毕节市耕地土壤进行量化评价，结果显示全市中-酸性耕地占比8531%，三等及以上耕地占比8218%，耕地土壤质量状况总体良好。土壤养分和土壤环境质量是耕地土壤质量评价的主要内容，其中土壤养分质量中等-较丰富等级占比9204%，磷、钾较缺乏-缺乏等级占比较高是制约土壤养分质量的重要因素；土壤环境质量优先保护类-安全利用类占比8237%，镉高含量区的分布是影响土壤环境质量的关键因素。本研究系统分析毕节市耕地土壤元素含量特征及其影响因素，对耕地土壤质量进行量化评价，为该地区农业生产中选择适宜的利用方式开发耕地资源和发展山地特色农业产业提供了地球化学支撑。 |
| 英文摘要: |
| In order to detailed invest the elements content characteristics and quality evaluation of cultivated land soil in Bijie city,the high precision analysis data of elements in cultivated land soil in the whole city were obtained through 1∶50000 geochemical survey of cultivated land soil quality. The statistical results showing that Se,Cd,Cu,Mn,Co and V in the cultivated soil of Bijie city were at a high level.The high content and distribution of elements are closely related to parent material,soil pH,soil type and land use mode,among which the parent material is the main influencing factor. Nutrient index N,P,K and environmental index pH,As,Cd,Cr,Cu,Hg,Ni,Pb,Zn were selected to carry out quantitative evaluation on cultivated land soil in Biji city.The evaluation results showing that the proportion of Medium-Acid cultivated land soil in the whole city is 85.31%,and the proportion of Third-Grade and above cultivated land soil is 82.18%. The cultivated land soil quality is generally good.Soil nutrient and soil environmental quality are the main contents of soil quality evaluation of cultivated land soil. Among them,the soil nutrient quality is mainly in the medium-rich grade,accounting for 92.04%,and the Phosphorus and Potassium are in the high-deficient grade,which are the important factors restricting the soil nutrient quality.Soil environmental quality priority protection - safe use of arable land accounted for 82.37%. The distribution of Cadmium high content area is the key factor affecting soil environmental quality. This study systematically analyze the characteristics of soil elements content and its influencing factors of cultivated land soil in Bijie city,and quantitatively evaluate the soil quality of cultivated land soil,which providing geochemical support for the selection of appropriate utilization methods for the development of cultivated land soil resources and the development of mountainous characteristic agricultural industry in this region. |
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